Perez was signed from Deportivo La Coruna for £17m two years ago but struggled to secure a regular first-team role during his debut campaign at Arsenal.

The Spaniard started just two Premier League matches under former Gunners boss Arsene Wenger and only made a total of 21 appearances before being sent back to La Coruna on loan.

It appeared as if new Arsenal boss Unai Emery would give the centre-forward a second chance as he included him in the pre-season tour of Singapore but the Spaniard ultimately moved to West Ham with the Gunners taking a huge hit on their £17m outlay.